[A Tour of Go] Exercise: Images

exercise-images.go

package main

import "golang.org/x/tour/pic"
import "image"
import "image/color"

type MyImage struct {
	w int
	h int
	v uint8
}

func (mi MyImage) ColorModel() color.Model {
	return color.RGBAModel
}

func (mi MyImage) Bounds() image.Rectangle {
	return image.Rect(0, 0, mi.w, mi.h)
}

func (mi MyImage) At(x, y int) color.Color {
	return color.RGBA{mi.v, mi.v, 255, 255}
}

func main() {
	m := MyImage{100, 100, 100}
	pic.ShowImage(m)
}